Horace b



(No Model.)

H. B. CAMP. MACHINE FOR MAKING GURVED PIPE.

No. 410,531. Patented Sept. 3, 1889'.

l'l ll 6 A A e n W N PETERS. Pholo-Lnhographgr, Wzahinglcn. o. c.

UNITED STATES HORACE B. CAMP, OF CUYAHOGA FALLS, OHIO, ASSIGNOR TO TURNER PATENT OFFICE.

VAUGHN & TAYLOR, OF SAME PLACE.

MACHINE FOR MAKING CURVED PIPE.

SPECIFICATION forming part of Letters Patent No. 410,531, dated September 3, 1889.

Application filed June 4, 1888. Serial No. 275,956. (No model.)

.To all whom it may concern.-

Be it known that I, HORACE B. CAMP, a citizen of. the United States, residing at Cuyahoga Falls, in the county of Summitand State of Ohio, have invented a certain new and useful Improvement in Sewer-Pipe Presses, of which the following is a specification.

My invention has relation to improvements in that class of presses for making sewer-pi pc in which the clay in a plastic state is pressed through an annular orifice between an outside die and a mandrel suspended cen trally therein.

The object of my invention is to provide a simple device whereby the press for straight pipe can be easily and quickly adapted to make curved pipe and as quickly rechanged.

My invention consists of the devices illustrated in the accompanying drawings, as hereinafter described and claimed.

In the accompanying drawings, in which similar letters of reference indicate like parts, Figure 1 is a central vertical section of the lower part of a sewer-pipe press with outside die and mandrel embodying my invention, and Fig. 2 a plan of the deflecting-ring.

The cylinder A is of the usual form, having a piston B, which forces the clay down, and a head C, the lower part of which tapers to form the outside die. In this head is an annular recess a at a right angle with the press and die, and supported centrally within the outside die is the mandrel D.

Thus far the press, excepting the recess a, differs in no respect from the ordinary sewer pipe press in common use for making straight pipe. To adapt it to make curved pipe, I

interpose a ring E, which fits and rests in the recess a, and has an internal diameter less than the die at that point, its opening being eccentric to its periphery. By this arrangement the broader side of the ring E retards the descent of the clay more than the narrower, and as a result the clay on the narrower side passes more rapidly from the die and causes the pipe to curve toward the opposite side.

I am aware that the principle of causing the pipe to curve by permitting a freer flow of clay on one side than the other is not new, as various devices have been invented for applying this principle.

The especial advantages of my device are its simplicity, cheapness, facility of changing the press from curved to straight pipe, and vice versa, and its adaptability to presses in Ordinary use by turning a recess a in the outer die and providing a suitablering to fit the recess.

I claim as my invention- The combination, with the head 0, having the internal recess a, and the mandrel I), supported centrally therein, of the detachable ring E, arranged to rest iinmovably in said recess and having an opening eccentric to its periphery, substantially as shown and described, and for the purpose specified.

In testimony that I claim the above I hereunto set my hand.

IIORACE B. CAMP.

In presence of CHARLES IIOWLAND, WILLIAM THAYER. 

